Noise floor

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/noise-floor

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the primary physical sources?Thermal agitation of charge carriers, cosmic background radiation, atmospheric discharges
2. What is the impact on measurement sensitivity?Determines the minimum detectable signal amplitude, limiting scientific observation

Noise Floor: The aggregate level of unwanted signals that sets the limit for signal detection.
Thermal Noise: Random electrical noise generated by the thermal agitation of charge carriers in a conductor.
Cosmic Noise: Electromagnetic radiation originating from astronomical sources and the Big Bang.
Instrumentation Noise Floor: Noise generated by the measurement equipment itself, often related to its noise figure.